Dual Decay

[Gray git]

In layman's terms is that basically 1 fungus putting up a barrier to stop another accessing it's section of the timber?

Am I correct in thinking 1 is a lignum digester and 1 a cellulose giving the opposing colours of decay,

Scraping the barrel of my memory from collage days but trying to refresh myself as to what's going on.

 

http://www.dryadarb.co.uk

[David Humphries]

Yep you're spot on, the cuticularis is putting up a barrier to stop the Ganoderma getting in to its feeding territory.

 

Both species are white rot decayers but they are affecting different parts of what makes up the wood to different degrees.

 

Relatively little is known or written about Innonotus cuticularis decay, but I suspect it's similar in characteristics to Inonotus hispidus in that it creates a simultaneous white rot breaking down both the cellulose and lignin within the affected wood.

 

What's really interesting here (well to me anyway ) is that it's on oak rather than its more usual host of beech, so the decay and associated wood quality will be fairly different.

 

Ganoderma resinaceum creates a selective delignification so affects the lignin mostly.

 

.

Edited July 27, 2016 by David Humphries

[sean]

Intrigued by the close proximity and seemingly rare association we took a slice through the oak to look at the two decays.

 

[ATTACH]209110[/ATTACH]

[ATTACH]209111[/ATTACH]

[ATTACH]209112[/ATTACH]

 

You can see from the still attached (but sliced) cuticularis brackets, that the I. c decay is significantly different to the rest of the cross section which affected by the decay of the Ganoderma which is noted as colonising via selective delignification.

 

[ATTACH]209113[/ATTACH]

 

The border of the cuticularis decay has been enclosed by a thin dark psuedosclerotial plate which is keeping the resinaceum decay from breaching its own section of the wood volume.

 

[ATTACH]209115[/ATTACH]

[ATTACH]209116[/ATTACH]

[ATTACH]209117[/ATTACH]

 

.

 

Really interesting post David, thanks. Have you encountered Cuticularis on Ok much on the Heath?

[David Humphries]

Really interesting post David, thanks. Have you encountered Cuticularis on Ok much on the Heath?

 

Never come across it anywhere on Oak before sean.

 

Waiting on Martyn Ainsworth at Kew for his thoughts.

 

 

 

 

 

 

.

[Gray git]

Thanks for the reply David, every day is a school day I guess.

 

http://www.dryadarb.co.uk

[David Humphries]

Thanks for the reply David, every day is a school day I guess.

 

Likewise

 

 

 

 

 

 

.

[David Humphries]

Not too unusual as fruiting seasons and hosts overlap, but Grifola frondosa and Fistulina hepatica are not often seen fruiting from the same part of a tree in my experience.

 

 

White rot decay of G. frondosa and brown rot decay of F. hepatica might create an interesting situation around these roots and buttresses.

 

 

 

.

[Kveldssanger]

Cool hens and oak tongues, there. Much prefer oak tongue to beefsteak...

[David Humphries]

Holm oak with Ganoderma resinaceum and what looks like a fairly odd looking Meripilus giganteus inhabiting and colonising the same space.

Images courtesy of one of the guys in the team, taken this weekend on the Kent coast.

 

.

[David Humphries]

Brrpp